The system
Article 01 · The system
The weekly rhythm.
IronShift programs one week at a time. Every Saturday morning at 8am local time, your next week rebuilds. The rebuild reads everything you logged the previous week — sets, RPE, feedback, reflections, synced activities, off-program work — and the engine adjusts the upcoming week accordingly.
You can preview next week’s plan from Saturday onwards. The current week stays put unless you explicitly reschedule individual sessions. Past weeks become history — they’re always viewable but never regenerated.
Related
What the engine reads when building next weekEvery input below feeds the rebuild. Logs, RPE, feedback chips, notes, weekly reflection, synced activities, off-program activities, and every Program-tab setting.What is RPE?A 1-to-10 scale of how hard a set or session felt. Captures fatigue and execution quality the bar weight can’t. The engine uses RPE drift to decide whether to push, hold, or back off next week.